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High altitude performance

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jesse(at)saintaviation.co
Guest

Posted: Tue Aug 28, 2012 4:30 pm Post subject: High altitude performance

I have a guy asking me how an RV-10 would perform in Mexico at 5,000 ft msl on a 2,000 ft strip. Any opinions of how much weight it could operate with at this altitude on a short strip in a warm climate?



Thanks. 



Jesse Saint

I-TEC, Inc.

jesse(at)itecusa.org

www.itecusa.org

www.mavericklsa.com

C: 352-427-0285

O: 352-465-4545

F: 815-377-3694



Sent from my iPhone

flysrv10(at)gmail.com
Guest

Posted: Tue Aug 28, 2012 4:48 pm Post subject: High altitude performance

I tested mine in Bryce Canyon airport (alt 7600 ft) on a summer day but not terribly hot, four people, full fuel, many bags, mid day and I used about 1/2 of the 7500 long runway.



do not archive.

On Aug 28, 2012, at 8:29 PM, Jesse Saint wrote:



 	  Quote: 	
		   

 

 I have a guy asking me how an RV-10 would perform in Mexico at 5,000 ft msl on a 2,000 ft strip. Any opinions of how much weight it could operate with at this altitude on a short strip in a warm climate?

 

 Thanks. 

 

 Jesse Saint

 I-TEC, Inc.

 jesse(at)itecusa.org

 www.itecusa.org

 www.mavericklsa.com

 C: 352-427-0285

 O: 352-465-4545

 F: 815-377-3694

 

 Sent from my iPhone

tysonr

Joined: 03 Jul 2012
Posts: 4

Posted: Wed Aug 29, 2012 7:07 am Post subject: Re: High altitude performance

I'm not going to be the guy that says you can or can't take off in 2000' at 5000MSL, but having just returned from a month (40hrs) of flying in CO and surrounding states I can tell you a little about my experience.  Flying a 280hp RV-10 with 170 lb pilot (me), a 190 lb co-pilot, and approx. 50 lbs baggage, we were off Leadville (9900 MSL, 14,000 DA !!) in significantly less than half of the 6400' runway.  My suggestions in priority order are: if possible have a local expert co-pilot as I did, lean to max RPM at run up, be sure the engine is warmed up before take off, don't carry fuel (weight) you don't need (I typically filled to 30 gals), use short field TO technique (brakes, no reflex in flaps).  I'm from Florida so the first few seconds seemed painfully slow, but after that the plane accelerated quickly.  Also, make sure your air intake system is clear and clean.

_________________
Tyson

rv10flyer

Joined: 25 Aug 2009
Posts: 364

Posted: Thu Aug 30, 2012 7:00 pm Post subject: Re: High altitude performance

I fly at 2700 gross weight all the time with my family out of a 5000' runway length at an elevation of 663'.  I have 260 hp all standard items. In the summer I use approximately 1500'-1800' for both takeoff and landing safely. No, I would not do it unless light or in an emergency.

_________________
Wayne G.

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Thu Aug 30, 2012 7:13 pm Post subject: High altitude performance

Hmm, Van's specs for sea level gross wt takeoff is 500 ft. Are you

sure you need 3 times that? Landing 650' at gross. I know I am not

that skilled at this time, but only have a bit more than an hour in a

-10, so I don't know how hard it is to match Van's published numbers.



On Thu, Aug 30, 2012 at 8:00 PM, rv10flyer <wayne.gillispie(at)gmail.com> wrote:

 	  Quote: 	
		   



 I fly at 2700 gross weight all the time with my family out of a 5000' runway length at an elevation of 663'.  I have 260 hp all standard items. In the summer I use approximately 1500'-1800' for both takeoff and landing safely. No, I would not do it unless light or in an emergency.



 --------

 Wayne Gillispie

 40983SB 12/1/2009-12/1/2011

 N715WD TT= 76.9 and loving it!





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=382172#382172

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

rv10flyer

Joined: 25 Aug 2009
Posts: 364

Posted: Thu Aug 30, 2012 8:06 pm Post subject: Re: High altitude performance

The only time that I have lifted off at 500' is solo, full fuel, oat=30-40F, Flaps= 3*. My first flight. Maybe a test pilot, using 18* flaps could get it off at full gross, but not with my family on board and not in my plane.



Landing, I bet I could get it stopped if I drug it in at 1.2 X Vso, raised flaps upon touching down and burnt my brakes up. Not in my plane, with my family and with me buying tires/brakes/doing all the work. Just in case of an emergency...I do have 83282 hyd fluid from sky geek in mine.  



The speed numbers are very close for the avg pilot. Takeoff and landing distances not so much unless you are testing for numbers to go in the sales literature or flying magazine. Maybe other better family hauling pilots can do it. I would just have to make several trips if the runway is under 1500' and around SL-1000' msl.

_________________
Wayne G.

robin(at)PaintTheWeb.com
Guest

Posted: Thu Aug 30, 2012 9:30 pm Post subject: High altitude performance

I have ~700 hours in various RV's and I could not spot land & stop in 650' at gross. I don't even want to try.



Robin



 



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AirMike

Joined: 27 Feb 2007
Posts: 514
Location: Nevada

Posted: Thu Aug 30, 2012 11:25 pm Post subject: high altitude performance

I fly out of Truckee, CA at 5900 feet. Getting out very light meaning pilot only might not be a problem, but landing might be a bigger problem. With no wind or a cross wind your relative speed is a lot higher on landing. Sometimes I am shocked at the distance that it takes to slow down and make the turnoff. On a hot  windy and turbulent day, you need to maintain a bit of extra speed ( I like 80 knots) down final. With these conditions you can easily eat up 2500 ft.

_________________
See you OSH '18
Q/B - sold.

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Fri Aug 31, 2012 4:01 am Post subject: High altitude performance

Same here most days.  I've made it down short nicely a few times, but the one thing I would never count on is staying under 1000' for takeoff or landing.  You may get to where you could do it regularly with some good flying but not at any altitude.   I personally don't think I'd bother trying a landing at a strip that's less than 2000' with the family along....and never at 5000msl.   Vans takeoff and landing

Specs are probably some of the hardest ones to match, IMHO.

Tim

On Aug 31, 2012, at 12:30 AM, Robin Marks <robin(at)PaintTheWeb.com> wrote:



[quote] 

 

 I have ~700 hours in various RV's and I could not spot land & stop in 650' at gross. I don't even want to try.

 

 Robin

 

 

 

 --

rv10flyer(at)verizon.net
Guest

Posted: Fri Aug 31, 2012 6:23 am Post subject: High altitude performance

I dropped the plane in at stall right on the numbers and used the brakes to 

slow down. Did it once during the 40 hour flyoff, no intention to do it 

again, but it can be done. I can not state if it is actually 650ft but it 

was the first turnoff at the airport, which I think is less than 700feet.



The bottom line is that is Vans marketing numbers, hard to duplicate unless 

one is an expert that practices doing it many more times than I do.

--

rv10flyer

Joined: 25 Aug 2009
Posts: 364

Posted: Fri Aug 31, 2012 7:24 am Post subject: Re: High altitude performance

It appears then that most of us loaded at gross would take our precious family/friends into a 2000' paved strip at any of the lower elevations(<1,000') with low gusts/crosswinds.



Now, back to the op question...I have never taken off from 5000' msl, but seeing the decrease in performance at that altitude I would definitely want to stay under 2400 lbs. That would mean full fuel and one passenger at a time or partial fuel and two passengers. The -10 is a great plane and even with Van saying it has great STOL-like performance, there are probably better planes out there for your friend at 5000' on a 2000' strip.

_________________
Wayne G.

robin(at)PaintTheWeb.com
Guest

Posted: Fri Aug 31, 2012 8:08 am Post subject: High altitude performance

Pascal,

I actually do think I could hit those numbers but again I don't want to. Especially with PAX. In general my PAX think I am a good & safe pilot. If I were to try bare minimums I suspect there would be 3 PAX that would then think differently afterwards. Easy on the equipment is my goal.



Robin

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rv10flyer(at)verizon.net
Guest

Posted: Fri Aug 31, 2012 8:17 am Post subject: High altitude performance

I would say that it can be done at higher altitudes as well, as long as it 

is practiced and not a random landing.



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